On August 8 episode of KBS2′s “Yoo Hee Yeol’s Sketchbook,” Wonder Girls appeared as guests and discussed their comeback as well as their new band concept.

Yoo Hee Yeol commented, “There have been people who were skeptical about how well you would do. You must have been scared.”

Yeeun replied, “[We] were really scared. We worried about that when we first started this. No matter how hard we try, how could we battle people who have been doing this for 10-20 years? We wouldn’t even be able to say we are good.”

She continued, “But the music became more fun as we prepared. We had good days and bad days, but we had fun listening to everyone’s emotions being portrayed through the sounds of our instruments. Then we thought about how we could share this fun with the public.”

The group has received some criticism for not performing live at various music shows, but they prove that they indeed are able of performing live on “Yoo Hee Yeol’s Sketchbook.” Check out their live band renditions of various songs below.